1-4
BE1-79S General Information
maybe reduced to 12 Vdc and operation will continue.
Contact Sensing Inputs
All contact sensing inputs recognize a change in contact status within
8.0 milliseconds.
When isolated contact sensing is provided, a dedicated Form A dry
contact rated 0.05 amp at 250 Vdc is required to complete the sensing
circuit.
When non-isolated contact sensing is provided, the input is polarity
sensitive and requires 24-60 Vdc at a burden of 3.5 W for a Type B
power supply, 62-150 Vdc at 4.5 W for a Type C power supply, 12-32
Vdc at 2.0 W for a Type D power supply, and 140-280 Vdc at 7.5 W for
a Type X power supply.
Reclose Initiate (RI) Input
The RI input, when closed prior to the operation of the breaker
sensing contact (52b), initiates the relay to respond to the change of
state of the breaker sensing input.
Breaker Sensing Input
(52b)
When isolated contact sensing is provided, a dedicated Form B dry
contact rated 0.05 amp at 250 Vdc is required to complete the sensing
circuit.
When non-isolated contact sensing is provided, the input is polarity
sensitive and requires 24-60 Vdc at a burden of 3.5 W for a Type B
power supply, 62-150 Vdc at 4.5 W for a Type C power supply, 12-32
Vdc at 2.0 W for a Type D power supply, and 140-280 Vdc at 7.5 W for
a Type X power supply.
The breaker sensing input, when closed, signifies that the controlled
breaker is open
Reclose Cancel (RC)
Input
Isolated and non-isolated input requirements are the same as the
reclose initiate (RI) input above.
The reclose cancel input, when closed, terminates reclose timing and
cancels the automatic breaker reclosure.
Voltage Monitor
(Option 2-S, D)
The voltage monitor compares the sensing inputs of a single phase of
line and bus voltages with pre-selected levels and permits automatic
breaker reclosure when specific voltage conditions have been satisfied.
These levels are independently adjustable over the range of 10 to 135
Vac.
Each voltage sensing input is rated for 150 Vac continuously at 50/60
Hz + 10 Hz, at amaximum burden of 1 VA.
Output Circuits
Resistive
120/240 Vac
125/250 Vdc
Make 30 A for 0.2 seconds, carry 7 A continuously, and break 7 A.
Make
30 A for 0.2 seconds, carry 7 A continuously, and break 0.1 A.
Inductive
120/240 Vac,
125/250 Vdc
Make 30A for 0.2 seconds, carry 7 A continuously, and break 0.1 A
(L/R = 0.04).
Summary of Contents for BE1-79S
Page 26: ...BE1 79S Installation 4 5 Figure 4 5 S1 Case Panel Drilling Diagram Semi Flush Mounting...
Page 28: ...BE1 79S Installation 4 7 Figure 4 8 Voltage Sensing Circuit Connections...
Page 29: ...4 8 BE1 79S Installation Figure 4 9 RI RC and 52b Sensing Circuit Connections...
Page 30: ...BE1 79S Installation 4 9 Figure 4 10 Internal Connection Diagram With Power Supply Status...